Switzerland and the United Kingdom signed an amending protocol to the 1977 income tax treaty between the two countries on 30 November 2017. The protocol:

• Amends the Preamble to include language developed as part of the BEPS Project;
• Deletes subparagraph (l) of paragraph 1 of Article 3 (General definitions), which states the term "international traffic" means any transport by a ship or aircraft…